Answer this question truthfully
### Question: What are the types of neonatal jaundice?
### Response: Jaundice is present to some degree in most newborns, and is called physiological jaundice. It usually appears between day 2 and 3, peaks between days 2 and 4, and clears by 2 weeks. Physiological jaundice usually causes no problems.
Other types of jaundice that usually cause no harm include:
Breast milk jaundice is probably caused by factors in the breast milk that slow the rate at which the liver breaks down bilirubin. Such jaundice appears in some healthy, breastfed babies after day 7 of life, and usually peaks during weeks 2 and 3. It may last at low levels for a month or more. Breastfeeding jaundice is seen in breastfed babies in the first week of life, especially in babies who are not nursing often enough. Breastfeeding jaundice is different than breast milk jaundice.
Babies who are born too early (premature) are more likely to develop jaundice than full-term babies.
Conditions that increase the number of red blood cells that need to be broken down, and can cause more severe newborn jaundice:
Abnormal blood cell shapes Blood type mismatch between the mother and the baby Bleeding underneath the scalp (cephalohematoma) caused by a difficult delivery Higher levels of red blood cells, which is more common in small-for-gestational-age babies and some twins Infection Lack (deficiency) of certain important enzymes
Conditions that make it harder for the baby's body to remove bilirubin may also lead to more severe jaundice:
Certain medications Congenital infections, such as rubella, syphilis, and others Diseases that affect the liver or biliary tract, such as cystic fibrosis or hepatitis Hypoxia Infections (such as sepsis) Many different genetic or inherited disorders